Bidspirit auction | Soviet Union - Commemorative Issues

Soviet Union - Commemorative Issues of 1933-35 - 1935, Mikhail Kalinin, 20k black brown, horizontal imperforated pair, nice margins all around, full OG, NH, VF, Raritan Stamps guarantee, C.v. $4,200++, Est. $2,000 -$2,500, Scott #576a